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E34-2G4D27SX Full-duplex wireless data transmission modulehigh-speed transparent transmission, low latency
[Introduction]：E34-2G4D27SX product is a full-duplex wireless data transmission module developed by Ebyte. It works in the 2.4-2.518GHz frequency band, has TTL level output, is compatible with 3.3V and 5V IO port voltages, and uses a serial port for data transmission and reception. The typical characteristics of the wireless module are high-speed transmission. Under a variety of baud rates, it can achieve full-duplex characteristics (simultaneous bidirectional transmission and reception), unlimited packet length, support uninterrupted transmission, and support file transfer.
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| Pin number | Pin name | Pin direction | Pin usage |
| 1 | RESET | enter | Module reset pin, 3.3V. |
| 2 | GND | - | Module ground wire |
| 3 | NC | - | Empty feet (not open for use, users do not need to care) |
| 4 | NC | - | Empty feet (not open for use, users do not need to care) |
| 5 | NC | - | 485_EN control pin |
| 6 | NC | - | Burning pin |
| 7 | NC | - | Burning pin |
| 8 | GND | - | Module ground wire |
| 11 | GND | - | Module ground wire |
| 12 | ON | - | Antenna interface (high frequency signal output, 50 ohm characteristic impedance) |
| 13 | GND | - | Module ground wire |
| 14 | GND | - | Module ground wire |
| 15 | GND | - | Module ground wire |
| 16 | GND | - | Module ground wire |
| 19 | GND | - | Module ground wire |
| 20 | M0 | Input (very weak pull-up) | Cooperate with M1 to determine the 4 working modes of the module (cannot be left floating, can be grounded if not used) |
| 21 | M1 | Input (very weak pull-up) | Cooperate with M0 to determine the 4 working modes of the module (cannot be left floating, can be grounded if not used) |
| 22 | RXD | enter | TTL serial port input, connected to the external TXD output pin; |
| 23 | TXD | output | TTL serial port output, connected to the external RXD output pin; |
| 24 | TO | output | Used to indicate the working status of the module; the user wakes up the external MCU and outputs low level during power-on self-test initialization; (can be left floating) |
| 25 | VCC | - | Module power supply positive reference, voltage range: 2.3~5.5V DC |
| 26 | GND | - | Module ground wire |